Gauging machine



Spt. 22,` 1931. H. L. VINE',

GAUGING MACHINE Filed June 30 1928 4 Sheets-Sheet, 1

/A/ vtm/ro@ Sept. 22, 1931. H. L. VINE GAUGING MACHINE Filed June 3 0.1928 4 Sheets-Sheet, 2

/A/V/SA/Toe Spt. 22, 1931. H. VINE GAUGING MACHINE Filed Jne 50, 1928 4Sheets-Sheet4 5 m budg-l Patented Sept. 22, 1931 HOWARD L. VINE, 0FCANTON, OH-O,

THE Tnuirnn ROLLER BEARING COMPANY, OF CANTON,- OBLIOQA'-CORPORATCNOFKGI-IIO GAUGING MACHINE Application filed June 30, 1928. `Serial No.289,398.

This invention relates to gauging machines and has for its principalobject to producey a gauging machine thatwill accurately determine theoutside diameter and roundness and concentricity of the outside andinside walls of annular articles of manufacture, such, for instance, asthe circular cups or outer bearing members of roller bearings. Otherobjects are to provide a plurality of adjustments whereby the gaugingmachine is adapted for gauging bearing cups of different diameters, tosimplify the gauging operation, to provide means for accuratelycentering the cups on the machine, and to provide for simplicity andcheapness of construction and compactness of design.' i y he inventionconsists in thegauging machine and in the construction, combinations andarrangements of parts hereinafter described and claimed.

ln the accompanying drawings, which forn part of this specification andwherein like symbols refer to like parts wherever they occur, Y y n ig.l is a front elevation of a gauging machine embodying my invention,parts of the machine being shown in vertical cross-section;

Fig. 2 is a horizontal cross-section through the machine on the line 2-2in Fig. 1, the

rotary work supporting table -inplanvien with cups of dilfere'ntdiameters shown positioned thereon and indicatedby means of dotand-dashlines; Y

Fig. 3 is an enlarged horizontal cross-section on the line 3 3 in Fig. 1through one of the supporting columns for thebearing supports for thegage arm supportingtube;

4 'is an enlarged vertical cross-sec,- tion on the line l-4 in Fig; 2through one of the radial slideways in the work supporting table,showing the stop mounted therein;

Fig. 5 is a vertical longitudinalsection through said slideway andstoponthe line 5-5ofFig4;

Fig. 6 is a vertical cross-section. through the lower `portion yof thesupporting arm for ythe outside indicating gage, said gage being shownin front elevation y arm supporting tube on the line 8 Fig. 7 is averticaly section through the supporting tube for the arm which supportsthe outside indicating gage,the section being taken on the line Z5-7 inFig. l;

F 8 is avertical section through the gage 8 in Fig. 1, and looking, inthe direction of the inside indicating gage and the V,supporting armtherefor which are sho-wn in elevation;

F 1g. 9 1s avfront elevation of the lower portion of the supporting armfor the inside y indicating gage,showing said gage mounted in theadjustable slideway provided therefor on said arm; Q

Fig. 10 is a horizontal cross-section on the line 10-10 in Fig.

F 11 is a side elevation of the cup centerin r device, showing the saiddevice ink posi` tion to center acup o-n the rotary work supportingtable Y y l Fig. 12 is a plan view of the centering device with partsthereof shown in section, and

Fig. 13 is a transverse cross-section through the centering device onthe line. 13e-13 -in Fig. 11. n

The present gauging machine is designed particularly` for use in gaugingannular cups or outer bearing members for roller bearings, although itis also adapted for gauging other annular articles of manufacture. Thegauging machine comprises a circular work'supporting table 1 provided'atits center with a downwardly extending pilot 2 journaled in a bushing 3provided'therefor in the top `of a suita le base or bed 4. f The worksupporting table is supported near its outer edge" upon theconicalrollers 5 of a taper roller i bearing mounted'on top of thebedbeneath said table. For convenience inlsliding large,

heavy cups onto the rotary work supporting ktable plates 6. aresccuredfto the top ofthe bed along thejfront edge thereof with theirtopsurfaces flush with the top surface of said table. l i

p Extendingfacrossthe top of the circular.V

worksupporting table 1 along'the diameter thereof is a horizontallydisposed cross member, preferably in the form of Aa cylindrical tube T,which is supported at its ends for rotaryand axial sliding. movement inbearings 7 provided therefor in bearing supports 8 sleeved on columns 9fixed to outstanding brackets 1G provided therefor on opposite sides ofthe bed 4 of the machine. The bearing supports `8 are split and areprovided with clamp screws 11 for clamping said sleeves to theirsupporting columns 9 in any desired position of their vertical vslidingmovement thereon. The cross tube T is provided at one end with a cranlrhandle 12 for manually rotating it in its vertically adjustable bearingsupports 8. Fixed to the top of each of the columns 8 is a gear box 13;and extending from the gear box on one column to the gear box on th-eother column is a horizontal shaft 14 whosev end portions extend throughsaid gear boxes and are rotatably supported therein. Pinned on the shaft14 within each gear box 13 is a beveled gear 15 whichv meshes withasimilar gear 16 pinned on the upper end of a vertically disposed screw17 that extends downward y through said box alongside' the supportingcolumn 9 therefor and has its lower end portion threaded through a screwthreaded opening provided therefor in a nut 18 bolted to the verticalface of the bearing support 8 mounted on said column. One end of thebeveled gear shaft 14 is provided with a cranlr 19 for rotating it andthe two screws 17 geared thereto to cause the bearing supports 8 toslide either upwardly or downwardly on the columns, depending on thedirection in which the beveled gear shaft is rotated, and thus raise orlower the cross tube T with respect to the Work supporting table 1.

A gauge supporting member 2O has a split hub portion, which is sleevedon the cross tube T for rotary and axial sliding movement thereon and isprovided with clamping screws 21 for clamping said hub portion to saidsupporting tube, and a radially extending arm 22 provided at its freeend with a split cylindrical bearing 23, which extends longitudinally ofsaid hub and is adapted to receive the horizontal shank 24 of asupporting body 25 for a suitable indicating gage 26, said shank portionbeing clamped in the split bearing of said armby means of suitableclamping screws 27. Slidably mounted in a longitudinal slideway 28provided therefor in the shank 24 of the gage support 25 is a slide bar29 vprovided at its wor; engaging end with a diamond point 30 adapted toengage the outer periphery of the cup that is to be gaged and prol vidednear its inner end with a shoulder 31 adapted to beary against ashoulder 32 formed adjacent to the pivot end of a lever 33 mounted forvertical swinging movement in a recess located in said shank above saidslide lthe slidable gage supporting plate.

of the diamond carrying slide bar away from the center of the table 1causes the free end of said lever to swing upwardly against the lowerend of the stem of said indicating gage and thus actuate the pointerthereof.

The outer end of the horizontally slidable diamond carrying bar 29carries a longitudinal pin 35 slidable in a bore arovided 'therefor inan outstanding lug 3@ or ear en bar 29 in the direction of the work asfar as" the stop nuts 37 will permit.

Mounted on the cross tube T is a gage supporting arm 39 having a Splithub portion, which is sleeved on said tube and is provided withaclamping screw 40 whereby it may be' clamped thereon in any desiredposition of adjustment, and a fiat surface disposed in a plane parallelto the axis of the supporting tube and adapted to face the front of themachine. the gage supporting arm 39 by means of a flatheaded bolt 41 anda lrnurled nut 42 is a swivel plate 43 having a dovetail slideway 4/ inits front face. A slide plate 45 has a dovetail rib 46 slidable in thedovetail slidewayn'l 44 in the swivel plate 43; and mounted on the frontface of said side plate adjacent to the lower end thereof is a suitableindicating gage 47 provided with a horizontally dis- Swiveled to theiiat front face of" posed axially movable stem portion 48, whoseH 7101outer end is adapted to Contact with the inner wall of the cup that isto be gauged and who-sc inner end is suitably connected with the gagemechanism (not shown) housed within the casing of the thereof.

The slidably and rotatably supported supporting plate 45 is preventedfrom slid- Ving out of the slideway 44 in the swivel plate 43 bymeans'of an outstanding pin 50 on one` side of said gage supportingplate which pin abuts against an outstanding' pin 51 located on theouter face of said swivel plate in the path of the pin carried by Thedovetail rib 46 of the slide plate 45 is cut away intermediate its endsto forni a transverse slideway 52, within which is located a frictionslide 53 having a beveled end 54 adapted to bear against theadjacentundercut side of the dovetail. slideway 44 inthe swivel plate 43. Theopposite end of said cross slide 53 is provided with a notch 55 withinwhich is mounted a coil spring 56, one end of which bears against theflat face gage'to operate the pointer' 1.2

uses-gessi:

of a pin 57 Acarried Ibythe :slide plate 45,1

and theother' end of-Which bearsagainstthe inner end of said 'notch andthus` serves to movement therein. The friction slide `53`is released topermit sliding movement of the sli-de plate 45 in the dovete-il slideway44 in the swivelplate 48 by means of .a lever 58. l

The `lever is pivotallyseeured within 'a recess 59 in the slide plateforswinging movement in a plane Aparallel to the direction in which thespring-pressed cross slide travels.

Said lever is arranged with onearm engaging a notch -60 providedthereforin they adjacent longitudinal edge of the cross slide 53; and

21p the other arm ofsaid lever is provided with an outstanding pin 61,which extends through an arcuate slot 62 provided therefor in the slideplate. and is located adjacent to a similar outstanding pin 63 fixed tothe front face of the slide plate adjacent to the lright hand end ofsaid-slot. With theV arrangement just describedjwhen it is desired tomove the sli-de plate 45 along the slideway 44 in the swivel plate 43,the operator grasps the two pins 6l and G3 on the lever 58 and slideplate respectively` and pulls the movable pin 6l towards the stationarypin 63, thereby causing the lever to swing on itspivot and thusdisengage the spring-pressed cross slide 53 from the side wall'of theslideway 44,

thereby permitting free sliding movement ofl said slide along saidslideway.` lVhen it is desired to change the angleof the slideway 44 Ainthe swivel plate 43'-, the nut 42` its free end with a horizontalborewhichv extends parallel to the axis of the supporting tube and isthreaded 'to receive a screw 66 having a lrnurled knob 67 at one end anda diamond point 68 at its .other'end, the contact screw being arrangedWith its diamond point nearest the center of the work e supporting tablein position to engage the outer periphery of the cup that is to'-be-gaged. Sleevedk en the rotary, axially slidable and verticallyadjustable cross. tubeiT, between right-hand bearing support 8 and thehub of the contact carrying arm 64, is ai split collar 69 that isclamped to the tube .inaiiydesireA position of 'itsf longitudinal.imovement thereon by meansfof a :suitable,.clamping .screw 70; andsleeved on said crosstu'be between said collar andsaid bearing` supportis. a coil spring' 7l which bears against lsaid collar to shift saidcross tube toythe leftv and hold the contact point in engagement withthe outer periphery oftheoup;v A vsplit collar 72 is clamped on ftheVleft-hand. end of the cross tube'just insidethe bearing support in"position to abut against said support and thus yprevent excessivetravel` ofthe tubefdue to the p-res-H sure ofthe spring 71.

Thev upper surface of the work table l is provided with two radiallyextending -T- shaped 'slide-ways 7 3 spaced 90 degrees apart;andslidably mounted ineach of said slidewaysis La'stop member 7 4 havingan upstand-` ing `portionfprovided 'at one end with a ver-k ticalv faceand `at Vthe other end with a beveled face which slopesV downwardly andoutwardly fromv the top of said'stop to the T-shaped face portionthereof. rlhe stops 74 are positioned ontliey worlrsupporting table withtheir vertical end faces in position to engage the cup and are firmlyclamped 4in theradial slideways in any position of their slidingmovement therein by means of set screws 75 that are threaded throughsaid stops and bear against the bottoms of said slideways.

Cups. that are to be gaged for out-ofroundnessv and concentricity of`inside and outside diameters are accurately centered` on the rotarywork supporting table l by means of a centering device comprising twotelescoping members,` an outer tubular inember 76 and an innerrodsection member 77 slidable in said tubular member. The twotelescoping members of tliecup centering, de vice are firmly'securedtogether against relative sliding movement by means of a knurled setscrew 78 which is threaded through the tubulanmember 7 6 and bearsagainst the rod member 77. The free or inner end of the rod member 77 isprovided with an end fitting 7 9, which issecured to said rodfinemberpreferably `by means of a set screw 8O and is provided with a sphericalsocket 8l adapted to rotatably engage the ball-shaped head portion 82of'a screw stud 83 which is'threaded -iiito the upper end of the pilot 2of the rotar work suaaortin table with the ball' l. c journal concentricthereto. Bolted or ot-herwise rigidly secured to the outerend of thetube 76 is a bloclr orhead provided at its outer end with a forwardlyextending lug 85 adapted ltosupport a suitable indicating gage 86 havinga stem 87 adapted to engage the inner periphery of tliecup that is to becentered on the table. Asshown inthe drawings, the gage 86 is pivotallysupported on a bolt 88 which passes through alined holes in the lug 85and a similar lug 89 onthe gage which is prevented from rotating on saidbolt when tl esame istightened. rlhe head S45-is also-provided beyondtlie-..end of :the

tube 76 with a transverse bore adapted to receive a screw S upon whichare rotatably supported two arms 90 disposed one 0n each side of saidblock. The opposing'faces of the arms 90 and the block 84 Yare providedwith cooperating ratchet teeth that are disposed radially with respectto the hubs of said arms and the boreV in said block; and one end 'oftheV screw S is providedr with a hnurled head 91 that bears against theouter face of one of said arms, while the other end of said screw isthreaded through the hub of the other of said arms, whereby tighteningof said screw operates to clamp the arms to thesides of the bloc-k withthe ratchet teet-h of the arms and block in mesh, thereby firmly lockingsaid arms to said block in the desired adjusted position.' Located atthe outer end of the centering device is a cup engaging finger framecomprising two parallel bars 92 that entend longitudinally of thetelescoping members '76 and 77 on opposite sides of thelongitudinalcenter line thereof and are connected at their outer ends by means of ai, cross rod 93. The outer ends of bars 92 terminate in dependinglingers haidng convex surfaces adapted to rest on the upper end of thecup; and theinner ends kOf said bars are slidably supported in slidewaysprovided therefor in the free ends of the two arms 90 located onopposite sides of the head 84 at the outer end of the tube 76. Theslidewl ys in the arnis 90 extend parallel to the longitudinal axis ofthe telescoping members 76 "l and 77, whereby the work engaging bars areadapted to be adjusted longitudinally of said members and radially' ofthe cent-er of the table. The finger bars are adapted to be clamped tothe supporting arms 90 in any desired adjusted position by means ofhnurled set screws 94 that are threaded through said arm and bearagainst the flat sides of said linger bars` The gauging machine is usedas follows: In-

arm about one-quarterturn on the cross tube Tand then clamping said armthereto in such position. The cross tube T is their lowered by means ofthe crank 19 to bring the contact screw 66 onthe arm 64 and the slidebar 29 ofv theV indicatino' -aaffe 26 oiiosite outer o D inV u Jperiphery of the cup at diaine-rical opposite points. rlhe collar 7 2 onthe cross tube is then adjusted to cause the Contact screw 66 to bearagainst vthe cup with somepressure and the cup to bear against thespring-pressed bar 29 of the indicating gage witA somewhat lesspressure. The outside diameter of thecup is then determined by slowlyrotating t-lie cross tube T by means of the crank 12, to cause thecontact members 29 and 66 to swing past the center of the cup, and themaximum reading of the gage 26`noted while so doing. A master cup ofknown diameter is used for setting the gage, and the maximum reading ofthe indicator during the gauging of the cup indicates whether theoutside diameter of the cup is correct. n

In gauging a cup for out-of-roundness or circularity and concentricityof inside and outside walls, the cup is accurately centered on thetable, as shown at B bythe dot-anddash lines in Fig. 2,.by means of thecentering device illustrated in sheetI l of the drawings. incentering'the cup on the table the spherical socket 8l at one end of thecentering device is engaged with the 'ball journal 82 providedthereforat'the center of the table and the centering dev'ce adjusted inthe manner hereinbefore described to bring the ends of the finger bars92 to restron top of the cup B and t0 bring the stem 87 of theindicating gauge into Contact with the inner periphery of the cup. Thelcentering device is then rotated within the cup about the axis of thetable as a center and the cup shifted until no movement is imparted tothe pointer of the gauge 86 during such rotary movement, therebyindicating that the cup is accurately centered on the table. Thecentering device is then removed, after which the adjustable stops 74 onthe tableare moved into engagement with the outer periphery of the cupand are locked to the table in this position.

ln gauging the cup for concentricity of Outside and insidev walls, thediamond points of the indicating gages 26 and 47 are brought intoengagement with ythe outer and inner walls, respectively, of the cup, inthe manner hereinbefore described, and the table is then slowly rotatedwhile the operator notes the readingof both gages. If the pointers 'ofboth gages remain stationary it indicates that the inner and outerperipheries of the cup'are concentric; whereas, if one or the other ofsaid pointers fluctuates it indicates the amount of eccentricity of theinner or outer periphery of the cup.y

In testing the inside and outside walls of a cup for out-of-roundness,the cup is centered on the table inthe manner above described and eachwall ischeclred separately by using the gage 26 for checking the outsidewall and the gauge a7 for checking the inner wall while slowly rotatingsaid table and carefully noting the reading of the gage engaged with thewall being checked, movement of the pointer indicating,out-of-roundnessand the amount thereof. Y

It is I noted that the inside gage 47 is adapted to be adjusted forsliding movement at anroblique angle'to the axis yof the rotary worktable by rotating the swivel plate 43 on the bolt 41,V vthereby adaptingsaid gage for use in gauging roller bearing-cups having` conicalraceways.

and inside ot the light weight cups that are lower than said stops. Itis also preferable to locatesaid stops exteriorly of cups that are beinggaged for inside circularity of out-of.- roundness. In practice it hasbeen found that the weight of the larger cups issuiiicient to hold themin place on the table after being.

centered thereon.

Obviously, the construction liereinbefore described admits ofconsiderable variation without departing from my invention.

lVhat l claim is:

l. A machine for determining the diameter, circularity andyconcentricity of the inside and outside walls of anrannular article,said machine comprising a table Jorrotatably supporting said article,gauging devices lo cated above said table in position to engage theinside and outside fwalls, respectively, of said articleatfdiametrically opposite peints, a gauging device located above saidtable and adapted toengage the inside wall oi' said article, meanswhereby said gauging devices are adapted forL independent movementradially of said table, and means for raising and lowering said gaugingdevices with respect to said table.

2. A machine tor determining the diameter, circularity and concentricityof the in# side and outside walls of anv annular article, said machinecomprising a table for rotatably supporting said article, Agaugingdevices `lofcated above said table in position tof engage the inside andoutside Walls, respectively, of said article at diametri'cally oppositepoints, a gauging device located above said ytableand adapted to engagethe inside kwall of ysaid article, means fo'rraising and loweringsaidgauging devices simultaneously. with `respect to said table, meanswhereby said gauging devices are adapted for independent movementradially of said table.and means whereby said gauging devices areadapted to `swing' in vertical planes 'at right angles to the'directionot their radial movement.

3. A gauging ni achine comprising arotary work 'supporting table,gauging devices located above said y worksupporting table in position toengage the opposite sides oi: wort: positionedthereon, 'a support fforsaid gauging devices.` said gaugingdevices being mounted for slidingmovement towards and away from eachother on said-support along adiameter of said table, means yfor raising and lowering said supportwithrespect to said table, and means whereby yone ot said gaugingdevices is adapted to be raised and lowered vindependently of saidsupport alone an inclined planedisposed at an obliqueangle to theaxisofsaid tablet? 4.a A gauging machine comprising a rotaryworlrvsupporting table, gauging devices located above said worksupporting table in position to engage. the opposite sides of workpositioned thereon, a support for saidgauging devices, said gaugingrdevices being mounted for sliding movement towards andaway from` eachother on said supportv radially of said table, means for raisingtandlowering said support with respect to said table, means whereby one. ofsaid gauging devices is adapted to `be' raised andlowered independentlyof said support along an inclined plane disposedl at an oblique angle tothe aXiso the table, and meansy whereby the angle of such planeis-adapted to be varied.

5. A gauging machine comprising a rotary work supportingtable, gaugingdeviceslocated .above said `work supporting table in position to engagethe. opposite sides 'of work positioned -thereon,a support for` saidgaugingf devices, ysaid gaugingv devices being mountedfor slidingmovement towards and away from each other on said support along adiameter of said table,.mean s for raising and lowering vsaidgauging-members simultaneously, means whereby one-ot said gaugingdevices; is adapted to be raisedand lowered independently of .saidsupport along a plane disposed at anvoblique angle t-o the axis .of saidtable, means whereby the angle of such plane maybe varied, and means forrotating saidsupport'upon a horizontal axis.

6. Algauging machinecomprising a horizontally disposed .worksupportingtable, a horizontally disposed cross member located above said table.and extending from side to side thereof, columns .located on oppositesides of said table and slidably and rotatably supporting `said crossmember, a gage arm rotatably and slidably. mounted at one end ony saidcross member, a gauging device mountedwonthe .free end of saidgage armandadapted to cooperate with the work sup-v ported on saidtable, andmeans for locking said gage armto said cross member.

7. `A gauging machine comprising a work supportingltable, a cross memberlocated above said table and extending from side to side thereof,columns located on opposite sides of saiditable, means slidably androtatably supporting said cross member on said columns, gage. armsslidably and -rotatably mounted on said cross member, gauging vdevicescarried bysaid gage arms and adapted to'engage diiierent surfaces of thework supported on -said table, and means :for locking said gage arms tosaid cross member in the desired adjusted position.

8. 'A gauging machine comprising a work supporting table, a horizontallydisposed cross member. located above said table and extending fromsideto side thereof, vertically movable supports for the ends oit' saidcross member, mounting means on r said machine for said supports, meansfor simultaneously adjusting said supports on said'mounting means, meansfor locking said supports in the desired adjusted position, gage armsslidably and rotatablymounted on said cross member, gauging'devicesmounted'on said gage arms and adapted to engage work supported on saidtable, and means for locking said gauge arms to said cross member indesired adjusted position.

' 9. A machine for gauging annular articles comprising a horizontallyrotatable table. gauging devices located above said table and vadaptedto cooperate with the inside and outside diameters respectively ofarticles supported thereon, means whereby said gages are adapted formovement radially of said table.I and means for swinging said gages vinplanes disposed yat right angles to the direction ot their radialmovement.

10. A machine for gauging annular articles comprising a horizontally.rotatable table, gauging devices located above said table and Y. adaptedto cooperate with Athe articles supported there-on, means for raisingand lowering said gagesrwithrespect to said table, means whereby saidgages are adapted Yto be moved radially of said table, andY means Jforswinging said gages in a. plane disposed at right angles to thedirection of their radial adjustment. s

11. A gauging machine comprising a horizontally disposed rotatable worksupporting table, a cross member located above saidtable and extendingfrom side to side thereof, columns located adjacent to the ends of saidcross members` bearing members slidably mounted on said columns androtatably supporting J:he ends of said cross member, gage arms rotatablyand slidably mounted at one end on said cross member, means for lockingsaid gage to said cross member, and gauging devicesmountedon the freeends of said gage `arms and adapted to engage the articles supported onsaid table.

12. A gauging machine comprising a circular horizontally disposedrotatable work supporting table, a cross member located above said tableand extending from side to side thereof diametrically thereto, columnslocated adjacent to the ends of said cross member, bearing membersslidably mounted on said columns and rotatably and slidably supportingthe ends of said cross member, gage armsirotatably and slidably mountedat .oneend on said cross member, means for locking said gage arms tosaid cross member., means for urging said cross member in one directionof its sliding movement, gauging devices mounted on the free ends ofsaid gage arms and adapted to engage the article supported on saidtable` and stops mounted 'on said table for radial sliding movementthereon. Y

13. .A gauging machine comprising a horiz'ontally disposed rotatablework supporting table, a cross member located above said table andextending from side to side thereof, columns located adjacent to theends of said cross members, bearing members slidably mounted on saidcolumns and rotatably supporting the ends of said cross member, gage'arms rotatably and slidably mounted at one end on said cross member,means for locking said gage arms to said cross member, gauging devicesmounted on the free ends of said gage arms and adapted to engage thearticles supported on said table, means mounted on said columns andengaging the slidable bearing supports thereon for simultaneouslysliding said supports on said columns, and means for rotating said crossmember in said bearing supports.

14. A gauging machine for gauging annular articles comprising ahorizontally disposed rotary work supporting table, gauging deviceslocated above said table and adapted to engage the outside wall of saidarticle at diametrically opposite points, a gauging device located abovesaid table and adapted to engage the inside Wall of said article, asingle vertically slidable and vhorizontally rotatable support for saidgauging devices, means for raising and lowering said support. and meansfor rotating said support, said gauging devices being rotatably andslidably mounted at one end on said support.

15. A gauging machine for gauging annular larticles comprising ahorizontally dis posed rotary work supporting table, said y table havinga center marker thereon adapted for cooperating with a device forcentering the articles on said table, gauging devices located above saidtable and adapted to engage the outside wall of said article atdiametrically opposite points, a gauging device located abo-ve saidtable and adapted to engage the inside wall' of said article, a singlesupport for said gauging devices, means for raising and-'lowering saidsupport with respect to said table, said gauging devices being capableof rotary and longitudinal adjustment on said support and means wherebyone of said gauging devices is adapted to be raised and lowered along aplane disposed at an obliqueangle to the axis of said table.

16. Ina machine Jfor gauging annular articles, a rotary work supportingtable having a center marker thereon, and means for centering thearticle on said table, said centering device comprising an eXtensiblemember having a portion adapted to rotatably engage the center marker ofthe table, a member adiustably mounted on said eXtensible member andadapted to engage the top of the article, and a gage mounted on saidextensible member in position to engage the inner wall of the articlebeing centered.

17. In a machine'for gauging annular articles, a horizontally vdisposedrotary Work lio lia

l'ilo supporting table having a center marker thereon, and means forcentering such articles on said table, said means comprising atelescopic member adapted toV pvotally engage the marker at the centerthereof, a Work engaging member pivotally supported on said telescopicmember and adapted to engage thev top surface of the article beingcentered, and an indicating gage pivotally sup- `ported on said articleengaging member inposition to cooperate with the inner Wall of saidarticle.

Signed at Canton7 Ohio, this 25V day of J une 1928.

HOWARD L. VINE`

